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2 years ago

I need help guys with this including steps ..

Mathematics

1 answer:

svp [43]2 years ago

7 0

Answer:

1. When adding you just add the numbers from the same space so

3 7

10 45

2. Same as adding but the opposite

2 1 2

3 1 6

1 2 1

Step-by-step explanation:

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Which expression is equivalent to -15x + 5?

salantis [7]

Answer:

the answer is a b c or d

Step-by-step explanation:

because I'm smart

6 0

2 years ago

You begin a job that has an annual salary of $33,500. You boss tells you that you will get a raise every year for the next 5 yea

Anastaziya [24]

$69,311.67

2,345 is 7% of 33,500 There are many sites that can show you how to get a percentage so I am going to move onward. You will add the seven percent on each year, like the following

First Year: 33,500
Second Year: 35,845 (+7%=2,345)
Third Year:38,354.15 (+7%=2509.15)
Forth Year: 41,038.94 (+7%=2684.79)
Fifth Year: 69,311.67 (+7%=2,872.75)

Sorry for wait.

6 0

3 years ago

Suppose a and b are both non zero real numbers. Find real numbers c and d such that 1/a+ib= c+id

Thepotemich [5.8K]

$\begin{gathered} c=\frac{a}{a^2+b^2} \\ d=\frac{-b}{a^2+b^2} \end{gathered}$

Explanation

$\frac{1}{a+bi}=c+di$

Step 1

multiplicate by the conjugate

$\begin{gathered} \frac{1}{a+bi}\cdot\frac{a-bi}{a+bi}=\frac{a-bi}{(a+bi)(a-bi)}=\frac{a-bi}{a^2-(bi)^2} \\ \frac{1}{a+bi}\cdot\frac{a-bi}{a+bi}=\frac{a-bi}{(a+bi)(a-bi)}=\frac{a-bi}{a^2-(-b^2)}=\frac{a-bi}{a^2+b^2} \end{gathered}$

notice that

$\begin{gathered} \frac{1}{a+bi}=\frac{a-bi}{a^2+b^2}=\frac{a}{a^2+b^2}-\frac{b}{a^2+b^2}i \\ \frac{a}{a^2+b^2}-\frac{b}{a^2+b^2}i=c+di \\ so \\ \end{gathered}$ $\begin{gathered} c=\frac{a}{a^2+b^2} \\ d=\frac{-b}{a^2+b^2} \end{gathered}$

I hope this helsp you

6 0

1 year ago

Pls help anyone!!!!!!!!!!!

nadezda [96]

9.) 3
10.) 1
11.) x-axis
12.) 4
13.) y-axis

6 0

3 years ago

Read 2 more answers

Write the recursive formula for -34, -38, -42, -46, -50 ...

Alex787 [66]

Answer:

-30 - 4n

Step-by-step explanation:

-34, -38, -42, -46, -50 ...

the sequence first term is -34

a= -34

Common difference (d) = T2 - T1 = T3 - T2

d = -38- -34 = -42 - - 38 = -38+34

d = -4

Formula for nth term

Tn = a + (n-1)d

Tn = -34 + (n -1)-4

Tn = -34 -4n + 4

Tn = -30 - 4n

= -30 - 4n

I hope this was helpful, please mark as brainliest

8 0

3 years ago